Adding sample schemas shipped with Oracle DB (#2992)

* Adding sample schemas shipped with Oracle DB

Added sample schemas that are included with the Oracle Guides. They are unbelievably common in live systems from personal experience.

https://docs.oracle.com/cd/E11882_01/server.112/e10575/tdpsg_user_accounts.htm#TDPSG20303

* Adding  as an oracle system database for exclusion

`APPQOSSYS` schema is used by Oracle Database QoS Management

https://docs.oracle.com/cd/E11882_01/server.112/e24611/install_config.htm